Greg Henderson

NASA has joined hands with an American technology company to develop a Star Trek-style 'tractor beam' that can manipulate objects in space.

When General Motors Co chief executive Mary Barra faces Congress next week she will have to explain how the top brass at the biggest US automaker can say they knew nothing for more than a decade about a faulty ignition switch linked to crashes and at least 12 deaths.

NASA has joined hands with an American technology company to develop a Star Trek-style 'tractor beam' that can manipulate objects in space.

When General Motors Co chief executive Mary Barra faces Congress next week she will have to explain how the top brass at the biggest US automaker can say they knew nothing for more than a decade about a faulty ignition switch linked to crashes and at least 12 deaths.